About the Authors

Hee Jung Park

Contributed equally to this work with: Hee Jung Park, Ji Yong Ahn

Affiliation Department of Gastroenterology, University of Ulsan College of Medicine, Asan Medical Center, Asan Digestive Disease Research Institute, Seoul, Korea

Ji Yong Ahn

Contributed equally to this work with: Hee Jung Park, Ji Yong Ahn

Affiliation Department of Gastroenterology, University of Ulsan College of Medicine, Asan Medical Center, Asan Digestive Disease Research Institute, Seoul, Korea

Hwoon-Yong Jung

hyjung@amc.seoul.kr

Affiliation Department of Gastroenterology, University of Ulsan College of Medicine, Asan Medical Center, Asan Digestive Disease Research Institute, Seoul, Korea

Jeong Hoon Lee

Affiliation Department of Gastroenterology, University of Ulsan College of Medicine, Asan Medical Center, Asan Digestive Disease Research Institute, Seoul, Korea

Kee Wook Jung

Affiliation Department of Gastroenterology, University of Ulsan College of Medicine, Asan Medical Center, Asan Digestive Disease Research Institute, Seoul, Korea

Do Hoon Kim

Affiliation Department of Gastroenterology, University of Ulsan College of Medicine, Asan Medical Center, Asan Digestive Disease Research Institute, Seoul, Korea

Kee Don Choi

Affiliation Department of Gastroenterology, University of Ulsan College of Medicine, Asan Medical Center, Asan Digestive Disease Research Institute, Seoul, Korea

Ho June Song

Affiliation Department of Gastroenterology, University of Ulsan College of Medicine, Asan Medical Center, Asan Digestive Disease Research Institute, Seoul, Korea

Gin Hyug Lee

Affiliation Department of Gastroenterology, University of Ulsan College of Medicine, Asan Medical Center, Asan Digestive Disease Research Institute, Seoul, Korea

Jin-Ho Kim

Affiliation Department of Gastroenterology, University of Ulsan College of Medicine, Asan Medical Center, Asan Digestive Disease Research Institute, Seoul, Korea

Seungbong Han

Affiliation Department of Clinical Epidemiology and Biostatistics, University of Ulsan College of Medicine, Asan Medical Center, Seoul, Korea

Competing Interests

The authors have declared that no competing interests exist.

Author Contributions

Conceptualization: HYJ. Data curation: HJP JYA. Formal analysis: SH. Investigation: HJP JHL. Methodology: HYJ JYA. Resources: HYJ. Software: JYA SH. Supervision: KDC HJS GHL JHK. Validation: GHL JHK. Visualization: KWJ DHK. Writing – original draft: HJP JYA. Writing – review & editing: JYA HYJ.